Visitors watch a mechanical arm writing during an exhibition on China's science and technology achievements during the 12th Five-Year Plan period (2011-2015) in Beijing, capital of China, June 4, 2016. (Xinhua/Shen Bohan)
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Visitors watch a mechanical arm writing during an exhibition on China's science and technology achievements during the 12th Five-Year Plan period (2011-2015) in Beijing, capital of China, June 4, 2016. (Xinhua/Shen Bohan)
